UWB stands for Ultra-Wideband. It is a short-range wireless technology that uses very wide radio frequency bandwidth to send quick pulses of data. One of its most useful features is precise distance measurement. Devices can estimate how far apart they are by measuring how long signals take to travel between them.
UWB is different from Wi-Fi or Bluetooth. Wi-Fi is mainly used for network data, and Bluetooth is often used for accessories and low-power connections. UWB is especially useful when a device needs to know location or direction accurately over a short distance.
A common example is finding a lost item tracker. If both the phone and tracker support UWB, the phone can guide the user with distance and direction instead of only saying the tracker is nearby. UWB can also be used for digital car keys, indoor navigation, smart home devices, access control, and asset tracking.
Because UWB sends very short pulses over a broad spectrum, it can work with low power and can be resistant to some kinds of interference. It is not meant to replace every wireless technology. It is best when accurate ranging and nearby device awareness matter.
In simple terms, UWB helps devices understand where nearby devices are. That makes it valuable for location-aware features that need more precision than a normal wireless signal strength estimate.